Added basic classes for editor Context actions (ReSharper-like "bulb").

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@6162 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/AvalonEdit.AddIn/AvalonEdit.AddIn.csproj

@@ -89,6 +89,7 @@
     <Compile Include="Src\CodeEditor.cs" />
     <Compile Include="Src\CodeEditorAdapter.cs" />
     <Compile Include="Src\CodeEditorView.cs" />
+    <Compile Include="Src\ContextActionsRenderer.cs" />
     <Compile Include="Src\ExpressionHighlightRenderer.cs" />
     <Compile Include="Src\NewLineConsistencyCheck.cs" />
     <Compile Include="Src\SharpDevelopTextEditor.cs" />

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CodeEditor.cs

@@ -180,17 +180,17 @@ namespace ICSharpCode.AvalonEdit.AddIn
 		
 		protected virtual CodeEditorView CreateTextEditor()
 		{
-			CodeEditorView textEditor = new CodeEditorView();
-			CodeEditorAdapter adapter = new CodeEditorAdapter(this, textEditor);
-			textEditor.Adapter = adapter;
-			TextView textView = textEditor.TextArea.TextView;
+			CodeEditorView codeEditorView = new CodeEditorView();
+			CodeEditorAdapter adapter = new CodeEditorAdapter(this, codeEditorView);
+			codeEditorView.Adapter = adapter;
+			TextView textView = codeEditorView.TextArea.TextView;
 			textView.Services.AddService(typeof(ITextEditor), adapter);
 			textView.Services.AddService(typeof(CodeEditor), this);
 			
-			textEditor.TextArea.TextEntering += TextAreaTextEntering;
-			textEditor.TextArea.TextEntered += TextAreaTextEntered;
-			textEditor.TextArea.Caret.PositionChanged += TextAreaCaretPositionChanged;
-			textEditor.TextArea.DefaultInputHandler.CommandBindings.Add(
+			codeEditorView.TextArea.TextEntering += TextAreaTextEntering;
+			codeEditorView.TextArea.TextEntered += TextAreaTextEntered;
+			codeEditorView.TextArea.Caret.PositionChanged += TextAreaCaretPositionChanged;
+			codeEditorView.TextArea.DefaultInputHandler.CommandBindings.Add(
 				new CommandBinding(CustomCommands.CtrlSpaceCompletion, OnCodeCompletion));
 			
 			textView.BackgroundRenderers.Add(textMarkerService);
@@ -200,16 +200,16 @@ namespace ICSharpCode.AvalonEdit.AddIn
 			textView.Services.AddService(typeof(IEditorUIService), new AvalonEditEditorUIService(textView));
 			
 			textView.Services.AddService(typeof(IBookmarkMargin), iconBarManager);
-			textEditor.TextArea.LeftMargins.Insert(0, new IconBarMargin(iconBarManager));
+			codeEditorView.TextArea.LeftMargins.Insert(0, new IconBarMargin(iconBarManager));
 			
 			textView.Services.AddService(typeof(ISyntaxHighlighter), new AvalonEditSyntaxHighlighterAdapter(textView));
 			
-			textEditor.TextArea.MouseRightButtonDown += TextAreaMouseRightButtonDown;
-			textEditor.TextArea.ContextMenuOpening += TextAreaContextMenuOpening;
-			textEditor.TextArea.TextCopied += textEditor_TextArea_TextCopied;
-			textEditor.GotFocus += textEditor_GotFocus;
+			codeEditorView.TextArea.MouseRightButtonDown += TextAreaMouseRightButtonDown;
+			codeEditorView.TextArea.ContextMenuOpening += TextAreaContextMenuOpening;
+			codeEditorView.TextArea.TextCopied += textEditor_TextArea_TextCopied;
+			codeEditorView.GotFocus += textEditor_GotFocus;
 			
-			return textEditor;
+			return codeEditorView;
 		}
 		
 		public event EventHandler<TextEventArgs> TextCopied;

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CodeEditorView.cs

@@ -42,6 +42,7 @@ namespace ICSharpCode.AvalonEdit.AddIn
 		
 		BracketHighlightRenderer bracketRenderer;
 		CaretReferencesRenderer caretReferencesRenderer;
+		ContextActionsRenderer contextActionsRenderer;
 		
 		public CodeEditorView()
 		{
@@ -51,6 +52,7 @@ namespace ICSharpCode.AvalonEdit.AddIn
 			
 			this.bracketRenderer = new BracketHighlightRenderer(this.TextArea.TextView);
 			this.caretReferencesRenderer = new CaretReferencesRenderer(this);
+			this.contextActionsRenderer = new ContextActionsRenderer(this);
 			
 			this.MouseHover += TextEditorMouseHover;
 			this.MouseHoverStopped += TextEditorMouseHoverStopped;

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/ContextActionsRenderer.cs

@@ -0,0 +1,79 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Martin Konicek" email="martin.konicek@gmail.com"/>
+//     <version>$Revision: $</version>
+// </file>
+using System;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Windows.Threading;
+using ICSharpCode.SharpDevelop.Editor;
+using ICSharpCode.SharpDevelop.Editor.AvalonEdit;
+using ICSharpCode.SharpDevelop.Refactoring;
+
+namespace ICSharpCode.AvalonEdit.AddIn
+{
+	/// <summary>
+	/// Renders Popup with context actions on the left side of the current line in the editor.
+	/// </summary>
+	public class ContextActionsRenderer
+	{
+		readonly CodeEditorView editorView;
+		ITextEditor Editor { get { return this.editorView.Adapter; } }
+		/// <summary>
+		/// This popup is reused (closed and opened again).
+		/// </summary>
+		ContextActionsPopup popup = new ContextActionsPopup() { StaysOpen = true };
+		
+		/// <summary>
+		/// Delays the available actions resolution so that it does not get called too often when user holds an arrow.
+		/// </summary>
+		DispatcherTimer delayMoveTimer;
+		const int delayMoveMilliseconds = 100;
+		
+		public ContextActionsRenderer(CodeEditorView editor)
+		{
+			if (editor == null)
+				throw new ArgumentNullException("editor");
+			this.editorView = editor;
+			
+			this.editorView.TextArea.Caret.PositionChanged += CaretPositionChanged;
+			
+			editor.TextArea.TextView.ScrollOffsetChanged += ScrollChanged;
+			this.delayMoveTimer = new DispatcherTimer() { Interval = TimeSpan.FromMilliseconds(delayMoveMilliseconds) };
+			this.delayMoveTimer.Stop();
+			this.delayMoveTimer.Tick += TimerMoveTick;
+		}
+
+		void ScrollChanged(object sender, EventArgs e)
+		{
+			this.popup.Close();
+		}
+
+		void TimerMoveTick(object sender, EventArgs e)
+		{
+			this.delayMoveTimer.Stop();
+			
+			var availableActions = ContextActionsService.Instance.GetAvailableActions(this.Editor);
+			var availableActionsVM = new ObservableCollection<ContextActionViewModel>(
+				availableActions.Select(a => new ContextActionViewModel(a)));
+			if (availableActionsVM.Count == 0)
+				return;
+			
+			this.popup.Actions = new ContextActionsViewModel {
+				Title = "Actions",
+				Actions = availableActionsVM
+			};
+			this.popup.OpenAtLineStart(this.Editor);
+		}
+
+		void CaretPositionChanged(object sender, EventArgs e)
+		{
+			this.popup.Close();
+			this.popup.Actions = null;
+			this.delayMoveTimer.Stop();
+			this.delayMoveTimer.Start();
+		}
+	}
+}

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/Snippets/SnippetManager.cs

@@ -38,6 +38,12 @@ namespace ICSharpCode.AvalonEdit.AddIn.Snippets
 						Text = "foreach (${var} ${element} in ${collection}) {\n\t${Selection}\n}",
 						Keyword = "foreach"
 					},
+					/*new CodeSnippet {
+						Name = "ff",
+						Description = "foreach loop",
+						Text = "foreach (var ${toElementName(items)} in ${items}) {\n\t${Selection}\n}",
+						Keyword = "foreach"
+					},*/
 					new CodeSnippet {
 						Name = "if",
 						Description = "if statement",

src/AddIns/Misc/SharpRefactoring/Project/SharpRefactoring.addin

@@ -48,7 +48,14 @@
 
 	<Path name="/SharpDevelop/ViewContent/AvalonEdit/SnippetElementProviders">
 		<Class id="ctor" class="SharpRefactoring.InsertCtorSnippetRefactoring" />
-		<Class id="ctor" class="SharpRefactoring.SwitchSnippetProvider" />
+		<Class id="switch" class="SharpRefactoring.SwitchSnippetProvider" />
+	</Path>
+	
+	<Path name="/SharpDevelop/ViewContent/AvalonEdit/ContextActionProviders">
+		<Class id="addUsing" class="SharpRefactoring.ContextActions.AddUsingProvider" />
+		<Class id="implementInterface" class="SharpRefactoring.ContextActions.ImplementInterfaceProvider" />
+		<Class id="implementAbstractClass" class="SharpRefactoring.ContextActions.ImplementAbstractClassProvider" />
+		<Class id="generateMember" class="SharpRefactoring.ContextActions.GenerateMemberProvider" />	
 	</Path>
 
 	<Path name="/SharpDevelop/ViewContent/TextEditor/OverrideCompletionHandler">

src/AddIns/Misc/SharpRefactoring/Project/SharpRefactoring.csproj

@@ -70,6 +70,10 @@
     </None>
     <Compile Include="Configuration\AssemblyInfo.cs" />
     <Compile Include="Src\ClassRefactoringSubmenuBuilder.cs" />
+    <Compile Include="Src\ContextActions\AddUsing.cs" />
+    <Compile Include="Src\ContextActions\GenerateMember.cs" />
+    <Compile Include="Src\ContextActions\ImplementAbstractClass.cs" />
+    <Compile Include="Src\ContextActions\ImplementInterface.cs" />
     <Compile Include="Src\CSharpMethodExtractor.cs" />
     <Compile Include="Src\Extensions.cs" />
     <Compile Include="Src\ExtractMethodCommand.cs" />
@@ -122,6 +126,7 @@
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Src\Gui" />
+    <Folder Include="Src\ContextActions" />
   </ItemGroup>
   <ItemGroup>
     <Page Include="Src\Gui\InsertCtorDialog.xaml" />

src/AddIns/Misc/SharpRefactoring/Project/Src/ContextActions/AddUsing.cs

@@ -0,0 +1,29 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Martin Konicek" email="martin.konicek@gmail.com"/>
+//     <version>$Revision: $</version>
+// </file>
+using System;
+using System.Collections.Generic;
+using ICSharpCode.SharpDevelop.Editor;
+using ICSharpCode.SharpDevelop.Editor.AvalonEdit;
+using ICSharpCode.SharpDevelop.Refactoring;
+
+namespace SharpRefactoring.ContextActions
+{
+	/// <summary>
+	/// Description of AddUsing.
+	/// </summary>
+	public class AddUsingProvider : IContextActionsProvider
+	{
+		public IEnumerable<IContextAction> GetAvailableActions(ITextEditor editor)
+		{
+			yield break;
+		}
+	}
+	
+	public class AddUsingAction
+	{
+	}
+}

src/AddIns/Misc/SharpRefactoring/Project/Src/ContextActions/GenerateMember.cs

@@ -0,0 +1,29 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Martin Konicek" email="martin.konicek@gmail.com"/>
+//     <version>$Revision: $</version>
+// </file>
+using System;
+using System.Collections.Generic;
+using ICSharpCode.SharpDevelop.Editor;
+using ICSharpCode.SharpDevelop.Editor.AvalonEdit;
+using ICSharpCode.SharpDevelop.Refactoring;
+
+namespace SharpRefactoring.ContextActions
+{
+	/// <summary>
+	/// Description of GenerateMember.
+	/// </summary>
+	public class GenerateMemberProvider : IContextActionsProvider
+	{
+		public IEnumerable<IContextAction> GetAvailableActions(ITextEditor editor)
+		{
+			yield break;
+		}
+	}
+	
+	public class GenerateMemberAction
+	{
+	}
+}

src/AddIns/Misc/SharpRefactoring/Project/Src/ContextActions/ImplementAbstractClass.cs

@@ -0,0 +1,39 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Martin Konicek" email="martin.konicek@gmail.com"/>
+//     <version>$Revision: $</version>
+// </file>
+using System;
+using System.Collections.Generic;
+using System.Windows;
+using ICSharpCode.SharpDevelop.Editor;
+using ICSharpCode.SharpDevelop.Editor.AvalonEdit;
+using ICSharpCode.SharpDevelop.Refactoring;
+
+namespace SharpRefactoring.ContextActions
+{
+	/// <summary>
+	/// Description of ImplementAbstractClass.
+	/// </summary>
+	public class ImplementAbstractClassProvider : IContextActionsProvider
+	{
+		public IEnumerable<IContextAction> GetAvailableActions(ITextEditor editor)
+		{
+			var currentLine = editor.Document.GetLine(editor.Caret.Line);
+			yield break;
+		}
+	}
+	
+	public class ImplementAbstractClassAction : IContextAction
+	{
+		public string Title {
+			get { return "Dummy implement abstract class"; }
+		}
+		
+		public void Execute()
+		{
+			MessageBox.Show("Dummy implement abstract class");
+		}
+	}
+}

src/AddIns/Misc/SharpRefactoring/Project/Src/ContextActions/ImplementInterface.cs

@@ -0,0 +1,39 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Martin Konicek" email="martin.konicek@gmail.com"/>
+//     <version>$Revision: $</version>
+// </file>
+using System;
+using System.Collections.Generic;
+using System.Windows;
+using ICSharpCode.SharpDevelop.Editor;
+using ICSharpCode.SharpDevelop.Editor.AvalonEdit;
+using ICSharpCode.SharpDevelop.Refactoring;
+
+namespace SharpRefactoring.ContextActions
+{
+	/// <summary>
+	/// Description of ImplementInterface.
+	/// </summary>
+	public class ImplementInterfaceProvider : IContextActionsProvider
+	{
+		public IEnumerable<IContextAction> GetAvailableActions(ITextEditor editor)
+		{
+			var currentLine = editor.Document.GetLine(editor.Caret.Line);
+			yield break;
+		}
+	}
+	
+	public class ImplementInterfaceAction : IContextAction
+	{
+		public string Title {
+			get { return "Dummy implement interface"; }
+		}
+		
+		public void Execute()
+		{
+			MessageBox.Show("Dummy implement interface");
+		}
+	}
+}

src/AddIns/Misc/SharpRefactoring/Project/Src/SwitchSnippetProvider.cs

@@ -11,7 +11,8 @@ using ICSharpCode.SharpDevelop.Editor.AvalonEdit;
 namespace SharpRefactoring
 {
 	/// <summary>
-	/// Description of SwitchSnippetProvider.
+	/// Registers refactoring:switchbody snippet tag.
+	/// (path /SharpDevelop/ViewContent/AvalonEdit/SnippetElementProviders)
 	/// </summary>
 	public class SwitchSnippetProvider : ISnippetElementProvider
 	{

src/Main/Base/Project/ICSharpCode.SharpDevelop.csproj

@@ -89,6 +89,8 @@
     <Compile Include="Src\Editor\AvalonEdit\AvalonEditSyntaxHighlighterAdapter.cs" />
     <Compile Include="Src\Editor\AvalonEdit\AvalonEditTextEditorAdapter.cs" />
     <Compile Include="Src\Editor\AvalonEdit\AvalonEditTextSourceAdapter.cs" />
+    <Compile Include="Src\Editor\AvalonEdit\ContextActionsService.cs" />
+    <Compile Include="Src\Editor\AvalonEdit\IContextActionsProvider.cs" />
     <Compile Include="Src\Editor\AvalonEdit\IndentationStrategyAdapter.cs" />
     <Compile Include="Src\Editor\AvalonEdit\ISnippetElementProvider.cs" />
     <Compile Include="Src\Editor\AvalonEdit\TextContentCondition.cs" />
@@ -103,7 +105,7 @@
     <Compile Include="Src\Editor\Commands\FindDerivedClassesOrOverrides.cs" />
     <Compile Include="Src\Editor\Commands\FindReferences.cs" />
     <Compile Include="Src\Editor\Commands\GotoLineNumber.cs" />
-    <Compile Include="Src\Editor\Commands\SymbolUnderCaretCommand.cs" />
+    <Compile Include="Src\Editor\Commands\SymbolUnderCaretMenuCommand.cs" />
     <Compile Include="Src\Editor\IEditorControlService.cs" />
     <Compile Include="Src\Editor\IEditorUIService.cs" />
     <Compile Include="Src\Editor\CodeCompletion\AttributesItemProvider.cs" />

src/Main/Base/Project/Src/Editor/AvalonEdit/ContextActionsService.cs

@@ -0,0 +1,48 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Martin Konicek" email="martin.konicek@gmail.com"/>
+//     <version>$Revision: $</version>
+// </file>
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using ICSharpCode.Core;
+using ICSharpCode.SharpDevelop.Refactoring;
+
+namespace ICSharpCode.SharpDevelop.Editor.AvalonEdit
+{
+	/// <summary>
+	/// Provides context actions available for current line of the editor.
+	/// </summary>
+	public sealed class ContextActionsService
+	{
+		private static ContextActionsService instance = new ContextActionsService();
+		
+		public static ContextActionsService Instance {
+			get {
+				return instance;
+			}
+		}
+		
+		List<IContextActionsProvider> providers;
+		
+		private ContextActionsService()
+		{
+			this.providers = AddInTree.BuildItems<IContextActionsProvider>("/SharpDevelop/ViewContent/AvalonEdit/ContextActionProviders", null, false);
+		}
+		
+		/// <summary>
+		/// Gets actions available for current line of the editor.
+		/// </summary>
+		public IEnumerable<IContextAction> GetAvailableActions(ITextEditor editor)
+		{
+			// could run providers in parallel
+			foreach (var provider in this.providers) {
+				foreach (var action in provider.GetAvailableActions(editor)) {
+					yield return action;
+				}
+			}
+		}
+	}
+}

src/Main/Base/Project/Src/Editor/AvalonEdit/IContextActionsProvider.cs

@@ -0,0 +1,23 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Martin Konicek" email="martin.konicek@gmail.com"/>
+//     <version>$Revision: $</version>
+// </file>
+using System;
+using System.Collections.Generic;
+using ICSharpCode.SharpDevelop.Refactoring;
+
+namespace ICSharpCode.SharpDevelop.Editor.AvalonEdit
+{
+	/// <summary>
+	/// Provides <see cref="ContextAction" />s to appear in a popup on the left side of the editor.
+	/// </summary>
+	public interface IContextActionsProvider
+	{
+		/// <summary>
+		/// Gets actions available for current line of the editor.
+		/// </summary>
+		IEnumerable<IContextAction> GetAvailableActions(ITextEditor editor);
+	}
+}

src/Main/Base/Project/Src/Editor/Commands/FindBaseClasses.cs

@@ -14,14 +14,14 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 	/// <summary>
 	/// Description of FindBaseClasses.
 	/// </summary>
-	public class FindBaseClasses : SymbolUnderCaretCommand
+	public class FindBaseClasses : SymbolUnderCaretMenuCommand
 	{
 		protected override void RunImpl(ITextEditor editor, int offset, ResolveResult symbol)
 		{
 			var classUnderCaret = GetClass(symbol);
 			if (classUnderCaret != null)
 			{
-				ContextActionsHelper.MakePopupWithBaseClasses(classUnderCaret).Open(editor);
+				ContextActionsHelper.MakePopupWithBaseClasses(classUnderCaret).OpenAtCaretAndFocus(editor);
 				return;
 			}
 			MessageService.ShowError("${res:ICSharpCode.Refactoring.NoClassUnderCursorError}");

src/Main/Base/Project/Src/Editor/Commands/FindDerivedClassesOrOverrides.cs

@@ -14,19 +14,19 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 	/// <summary>
 	/// Description of FindDerivedClassesOrOverrides.
 	/// </summary>
-	public class FindDerivedClassesOrOverrides : SymbolUnderCaretCommand
+	public class FindDerivedClassesOrOverrides : SymbolUnderCaretMenuCommand
 	{
 		protected override void RunImpl(ITextEditor editor, int offset, ResolveResult symbol)
 		{
 			var classUnderCaret = GetClass(symbol);
 			if (classUnderCaret != null) {
-				ContextActionsHelper.MakePopupWithDerivedClasses(classUnderCaret).Open(editor);
+				ContextActionsHelper.MakePopupWithDerivedClasses(classUnderCaret).OpenAtCaretAndFocus(editor);
 				return;
 			}
 			var memberUnderCaret = GetMember(symbol);
 			if (memberUnderCaret != null && memberUnderCaret.IsOverridable)
 			{
-				ContextActionsHelper.MakePopupWithOverrides(memberUnderCaret).Open(editor);
+				ContextActionsHelper.MakePopupWithOverrides(memberUnderCaret).OpenAtCaretAndFocus(editor);
 				return;
 			}
 			MessageService.ShowError("${res:ICSharpCode.Refactoring.NoClassOrOverridableSymbolUnderCursorError}");

src/Main/Base/Project/Src/Editor/Commands/FindReferences.cs

@@ -13,7 +13,7 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 	/// <summary>
 	/// Description of FindReferences.
 	/// </summary>
-	public class FindReferences : SymbolUnderCaretCommand
+	public class FindReferences : SymbolUnderCaretMenuCommand
 	{
 		protected override void RunImpl(ITextEditor editor, int offset, ResolveResult symbol)
 		{

src/Main/Base/Project/Src/Editor/Commands/GoToDefinition.cs

@@ -12,7 +12,7 @@ using ICSharpCode.SharpDevelop.Gui;
 
 namespace ICSharpCode.SharpDevelop.Editor.Commands
 {
-	public class GoToDefinition : SymbolUnderCaretCommand
+	public class GoToDefinition : SymbolUnderCaretMenuCommand
 	{
 		protected override void RunImpl(ITextEditor editor, int offset, ResolveResult symbol)
 		{

src/Main/Base/Project/Src/Editor/Commands/SymbolUnderCaretMenuCommand.cs

@@ -14,7 +14,7 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 	/// <summary>
 	/// A menu command that uses the symbol under the editor's caret.
 	/// </summary>
-	public abstract class SymbolUnderCaretCommand : AbstractMenuCommand
+	public abstract class SymbolUnderCaretMenuCommand : AbstractMenuCommand
 	{
 		public override void Run()
 		{
@@ -30,6 +30,8 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 			RunImpl(editor, caretOffset, resolveResult);
 		}
 		
+		protected abstract void RunImpl(ITextEditor editor, int caretOffset, ResolveResult symbol);
+		
 		public IClass GetClass(ResolveResult symbol)
 		{
 			if (symbol == null || !(symbol is TypeResolveResult)) {
@@ -45,7 +47,5 @@ namespace ICSharpCode.SharpDevelop.Editor.Commands
 			}
 			return ((MemberResolveResult)symbol).ResolvedMember;
 		}
-		
-		protected abstract void RunImpl(ITextEditor editor, int caretOffset, ResolveResult symbol);
 	}
 }

src/Main/Base/Project/Src/Services/RefactoringService/ContextActions/ContextActionCommand.cs

@@ -10,7 +10,7 @@ using System.Windows.Input;
 namespace ICSharpCode.SharpDevelop.Refactoring
 {
 	/// <summary>
-	/// Description of ContextActionCommand.
+	/// Just wraps <see cref="IContextAction"></see> inside a WPF Command to be used in XAML.
 	/// </summary>
 	public class ContextActionCommand : ICommand
 	{
@@ -25,6 +25,7 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 		
 		public event EventHandler CanExecuteChanged
 		{
+			// not supported - Context actions can always be executed
 			add { }
 			remove { }
 		}

src/Main/Base/Project/Src/Services/RefactoringService/ContextActions/ContextActionViewModel.cs

@@ -18,7 +18,18 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 	/// </summary>
 	public class ContextActionViewModel
 	{
-		public string Name { get; set; }
+		public ContextActionViewModel()
+		{
+		}
+		
+		public ContextActionViewModel(IContextAction action)
+		{
+			if (action == null)
+				throw new ArgumentNullException("action");
+			this.Action = action;
+		}
+		
+		public string Name { get { return this.action.Title; } }
 		
 		public string Comment { get; set; }
 		

src/Main/Base/Project/Src/Services/RefactoringService/ContextActions/ContextActionsPopup.cs

@@ -35,13 +35,13 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 				Close();
 		}
 		
-		private ContextActionsControl ActionsControl 
+		private ContextActionsControl ActionsControl
 		{
 			get { return (ContextActionsControl)this.Child; }
 			set { this.Child = value; }
 		}
 		
-		public ContextActionsViewModel Actions 
+		public ContextActionsViewModel Actions
 		{
 			get { return (ContextActionsViewModel)ActionsControl.DataContext; }
 			set { ActionsControl.DataContext = value; }
@@ -62,30 +62,49 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 			this.IsOpen = false;
 		}
 		
-		public void Open(ITextEditor editor)
+		public void OpenAtCaretAndFocus(ITextEditor editor)
+		{
+			OpenAtPosition(editor, editor.Caret.Line, editor.Caret.Column, true);
+			this.Focus();
+		}
+		
+		public void OpenAtLineStart(ITextEditor editor)
+		{
+			OpenAtPosition(editor, editor.Caret.Line, 1, false);
+		}
+		
+		void OpenAtPosition(ITextEditor editor, int line, int column, bool openAtWordStart)
 		{
 			var editorUIService = editor.GetService(typeof(IEditorUIService)) as IEditorUIService;
 			if (editorUIService != null) {
 				var document = editor.Document;
-				int line = editor.Caret.Line;
-				int column = editor.Caret.Column;
 				int offset = document.PositionToOffset(line, column);
-				int wordStart = document.FindPrevWordStart(offset);
-				if (wordStart != -1) {
-					var wordStartLocation = document.OffsetToPosition(wordStart);
-					line = wordStartLocation.Line;
-					column = wordStartLocation.Column;
+				if (openAtWordStart) {
+					int wordStart = document.FindPrevWordStart(offset);
+					if (wordStart != -1) {
+						var wordStartLocation = document.OffsetToPosition(wordStart);
+						line = wordStartLocation.Line;
+						column = wordStartLocation.Column;
+					}
 				}
-				var caretScreenPos = editorUIService.GetScreenPosition(line, column);
 				this.Placement = PlacementMode.Absolute;
-				this.HorizontalOffset = caretScreenPos.X;
-				this.VerticalOffset = caretScreenPos.Y;
+				try
+				{
+					var caretScreenPos = editorUIService.GetScreenPosition(line, column);
+					this.HorizontalOffset = caretScreenPos.X;
+					this.VerticalOffset = caretScreenPos.Y;
+				}
+				catch
+				{
+					this.HorizontalOffset = 200;
+					this.VerticalOffset = 200;
+				}
+				
 			} else {
 				this.HorizontalOffset = 200;
 				this.VerticalOffset = 200;
 			}
 			this.Open();
-			this.Focus();
 		}
 	}
 }

src/Main/Base/Project/Src/Services/RefactoringService/ContextActions/IContextAction.cs

@@ -14,6 +14,7 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 	/// </summary>
 	public interface IContextAction
 	{
+		string Title { get; }
 		void Execute();
 	}
 }

src/Main/Base/Project/Src/Services/RefactoringService/ContextActionsHelper.cs

@@ -65,10 +65,9 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 			protected ContextActionViewModel MakeGoToClassAction(IClass @class, ObservableCollection<ContextActionViewModel> childActions)
 			{
 				return new ContextActionViewModel {
-					Name = this.LabelAmbience.Convert(@class),
+					Action = new GoToClassAction(@class, this.LabelAmbience),
 					Image = ClassBrowserIconService.GetIcon(@class).ImageSource,
 					Comment = string.Format("(in {0})", @class.Namespace),
-					Action = new GoToClassAction(@class),
 					ChildActions = childActions
 				};
 			}
@@ -111,10 +110,9 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 					return null;
 				
 				return new ContextActionViewModel {
-					Name = this.LabelAmbience.Convert(overridenMember),
+					Action = new GoToMemberAction(overridenMember, this.LabelAmbience),
 					Image = ClassBrowserIconService.GetIcon(overridenMember).ImageSource,
 					Comment = string.Format("(in {0})", containingClass.FullyQualifiedName),
-					Action = new GoToMemberAction(overridenMember),
 					ChildActions = childActions
 				};
 			}

src/Main/Base/Project/Src/Services/RefactoringService/GoToClassAction.cs

@@ -14,20 +14,24 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 	/// </summary>
 	public class GoToClassAction : IContextAction
 	{
+		public string Title { get; private set; }
 		public IClass Class { get; private set; }
 		
-		public GoToClassAction(IClass c)
+		public GoToClassAction(IClass c, IAmbience ambience)
 		{
+			if (ambience == null)
+				throw new ArgumentNullException("ambience");
 			if (c == null)
 				throw new ArgumentNullException("c");
 			this.Class = c;
+			this.Title = ambience.Convert(c);
 		}
 		
 		public void Execute()
 		{
 			var cu = this.Class.CompilationUnit;
 			var region = this.Class.Region;
-			if (cu == null || cu.FileName == null || this.Class.Region.IsEmpty)
+			if (cu == null || cu.FileName == null || region == null || region.IsEmpty)
 				return;
 			FileService.JumpToFilePosition(cu.FileName, region.BeginLine, region.BeginColumn);
 		}

src/Main/Base/Project/Src/Services/RefactoringService/GoToMemberAction.cs

@@ -14,20 +14,24 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 	/// </summary>
 	public class GoToMemberAction : IContextAction
 	{
+		public string Title { get; private set; }
 		public IMember Member { get; private set; }
 		
-		public GoToMemberAction(IMember member)
+		public GoToMemberAction(IMember member, IAmbience ambience)
 		{
+			if (ambience == null)
+				throw new ArgumentNullException("ambience");
 			if (member == null)
 				throw new ArgumentNullException("member");
 			this.Member = member;
+			this.Title = ambience.Convert(member);
 		}
 		
 		public void Execute()
 		{
 			var cu = this.Member.CompilationUnit;
 			var region = this.Member.Region;
-			if (cu == null || cu.FileName == null || region.IsEmpty)
+			if (cu == null || cu.FileName == null || region == null || region.IsEmpty)
 				return;
 			FileService.JumpToFilePosition(cu.FileName, region.BeginLine, region.BeginColumn);
 		}

src/Main/Base/Project/Src/Services/RefactoringService/RefactoringMenuBuilder.cs

@@ -195,7 +195,7 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 			item.Icon = ClassBrowserIconService.Class.CreateImage();
 			item.InputGestureText = new KeyGesture(Key.F9).GetDisplayStringForCulture(Thread.CurrentThread.CurrentUICulture);
 			item.Click += delegate { 
-				ContextActionsHelper.MakePopupWithDerivedClasses(baseClass).Open(context.Editor);
+				ContextActionsHelper.MakePopupWithDerivedClasses(baseClass).OpenAtCaretAndFocus(context.Editor);
 			};
 			return item;
 		}
@@ -208,7 +208,7 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 			item.Icon = ClassBrowserIconService.Interface.CreateImage();
 			//item.InputGestureText = new KeyGesture(Key.F10).GetDisplayStringForCulture(Thread.CurrentThread.CurrentUICulture);
 			item.Click += delegate {
-				ContextActionsHelper.MakePopupWithBaseClasses(@class).Open(context.Editor);
+				ContextActionsHelper.MakePopupWithBaseClasses(@class).OpenAtCaretAndFocus(context.Editor);
 			};
 			return item;
 		}
@@ -221,7 +221,7 @@ namespace ICSharpCode.SharpDevelop.Refactoring
 			item.Icon = ClassBrowserIconService.Method.CreateImage();
 			item.InputGestureText = new KeyGesture(Key.F9).GetDisplayStringForCulture(Thread.CurrentThread.CurrentUICulture);
 			item.Click += delegate {
-				ContextActionsHelper.MakePopupWithOverrides(member).Open(context.Editor);
+				ContextActionsHelper.MakePopupWithOverrides(member).OpenAtCaretAndFocus(context.Editor);
 			};
 			return item;
 		}